The file SUV contains the overall miles per gallon (MPG) of 2012 small SUVs:
20 22 23 22 23 22 22 21 19
22 22 26 23 24 19 21 22 16
Source: Data extracted from "Ratings," Consumer Reports, April 2012, pp. 35-36.
a. Compute the first quartile (Q1), the third quartile (Q3), and the interquartile range.
b. List the five-number summary.
c. Construct a boxplot and describe its shape.